Means for coiling pipes or tubes.



PATENTED SEPT. 10, 1907. R. R. ROW. MEANS FOR GOILING PIPES 0R TUBES.

APPLICATION FILED JULY 20. 1906.

2 SHEETS-SHEET 1.

INVENTOR ,fielze/z 133. 180w ATTORNEY PAT ENTED SEPT. 10, 1907 R. R. ROW. MBANSIOR 001mm PIPES OR TUBES.

APPLICATION FILED JULY 20. 1906.

2 SHEETS-SHEET 2 ATTORNEY UNITED STATES PATENT oEEIoE.

REUBEN R. Row, or JERSEY CITY, NEW JERSEY, ASSIGNOR To TriE JAMES EILLYREPAiR AND SUPPLY COMPANY, or JERSEY oITY, NEWJERSEY, A CORPORATION OF-NEW J ERSEY.

MEANS FOR COILING PIPES OR TUBES.

Application filed July 20,1906. Serial No. 326,980.

To all whom it may concern: I

Be it linown that I, REUBEN It. Row, a citizen of the v The invention relates to improvements in means for forming pipe-coils of the character used in feed water heaters, condensers, evaporators and other apparatus; and it consists in tlie novel features, arrangements and combinations of parts hereinafter'described, and particularly pointed out in the claims.

The object or the invention is to produce novel means for rapidly, accurately and automatically fashioning a length of straight pipe or tubing into a uniform spiral coil, without flattening "the pipe and without necessi: tating the lilling of the pipe, preparatory to the coiling operation, with a solid substance to prevent such flattening.

It has heretofore been necessary in the formation of spiral coils of copper tubing to solidly fill. the straight length of tubing preparatory to coiling the same, and this process has not only involved considerable annoyance, uncertainty and expense in preparing the tubes but added labor and expense in thereafter removing the filling from the coil.

One of the purposes of my invention is to provide means adapted to coil straight tubes without the same being filled and thus to avoid the labor and expense heretofore incurred in filling the straight tubes and then clearing out the coils. 1 r L In carrying out my invention I mount in a lathe a spirally grooved mandrel around which the tube or pipe is coiled and provide on the traveling carriage of the lathe a coiling die or tool for cooperation with said mandrel in compelling the tube. to become accurately and uniformly coiled upon the same. 1 also provide the coiling die or tool with means, which may be brought into usewhen desired, for forming a groove in the tube as coiled, said greoveextending the full lengthof the tube and being desirable in coils for evaporators and some other apparatus.

The invention will be more iully understood from the detailed description hereinafter presented, reference being had to the accompanyingdrawings, in which:-

Figure 1 is a front view, partly broken away, of. a lathe equipped with a mandrel and coiling-die embodying my invention, the mandrel being partly broken away and shown with a tube coiled thereon;

Fig. 2 is a top view of same, the dotted lines at the right hand portion of the figure indicating the manner of bending the end of the tube straight and in line with the length of the coil to be formed before the ceiling operation is carried out} Fig.3 is a'traiisverse section through the mandrel on the dotted lin'e'3-3 of Fig. 2,

Patentedsept. p

the rear portion of the coiling die-being also showninf section to disclose the roller adjnstably held thereinfor grooving the tube as coil'ed,-'when desired;'Fig. 4 is a detached topview of the ceiling die to besecure'duon the traveling carriage of the lathe; Fig. 5 isa horizontal section through the mandrel and die on the dotted line:

.5-5 of Fig. 3 and showing thegroove f'orming rolleras having been advanced to producea groove in the tube as coiled; and Fig. 6 is a vertical section through the ceiling die on the dotted line 6-6 of Fig; 3, the,man-

drel being omitted.

In the drawings, 10, 1O respectively designate poltions of the head andtail stocks of a known. form of lathe-,and ll denotes a portion-of the-usual carriage which during the operation-0i the'lathe is caused, to

the vertical planes travel lengthwise of same between of said head and tail stocks;

The spirally grooved mandrel isnumeral 12, and it is mounted between the. head and tail stocks of the lathe above the carriage -11, upn

which I detachably secure, by means of bolts 13, the

designated the coiling die ortool 14. The mandrel :12 is formed with a continuous spiral groove 15 adapted to'the diameter oi the tubes to be coiled, and at its left hand end: this I mandrel is clamped to the headstock and derives its f rotary motion therefrom. At its right hand end the V mandrel 12 is formed witha plain shank-portion 16 having a transverse aperture-17 to receivethe stem 18 of a hook-block 19, the latter ,engagingthe surface of 35 said shank-portion 16 (Fig. 1) and -being. .detachably secured in place by means ofa cotter-'key20 ,Whichis passed through a slot-in the stem 18 close to said shankportion 16. At its inner on} the hook-block 19 is grooved 'to receive and hold theend-,portionof the tube, numbered 21, against the mandrel, asshown in Figs. 1 and 2, preparatory to the forination oi the, coil and also to the bending of a definite length, numbered 22, of the end of the tube 21 fronrits initial position shown by dotted lines in Fig. 2, to a position in line with the length ofthe mandrel and againsttheside of the block 19, as shown-by solid lines in Figs. 1Iand2, the forward edg'eof thegro'ove in'thebloclr beingconw vexed, as denoted by dotted lines in Fig, 2, to avoid the bending of the end 22 around a sharp angle. The block 19 thus operates as a; grip. for. h0lding down the forward end' ol the ,tube uponthe .mandrehand as an anvil for enabling the proper bendingof-the end 22 of the tube at substantially right angles tolitsli nitial 1 position. The end 22 of the tube is bent intothe form shown for two reasons,one being that such end is required for connecting the coil with theusual header with which it cooperates in the 'condenser heateror whose operating face is on the are of a circle and formed ith a groove 26 and convex rib 27, said groove 20 being a continuation of the groove 24 and set at the same pitch as the groove in the mandrel l2, and said convex rib 27 being elongated and on the are of a circle and set at the same pitch as the groove in said mandrel. The rib 27 is parallel with and adjacent to the groove 26, as clearly shown in Fig. 4. At opposite sides of the groove 26 are shoulders 22$, 29 respectively and at the outer side of the rib 27 is a shoulder 30, all of these shoulders being parallel with each other and on the arc of a circle and on the same pitch as the spiral rib 31 defining the groove 15 in the mandrel 12. i

When the tool 14 is set up close against. the mandrel 12, as shown in Figs. 3 and 5, the spiral rib 31 of the mandrel fits against the shoulders 28, 29, 30 of said tool and the rib 27 of said tool fits within and engages the wall of a section of thegroove 15 of said mandrel, while the groove 26 of said tool matches a section of said groove 15 and therewith defines a passage, circular in cross-sec tion, through which the tube is drawn during the coiling operation, said passage in all cases being of a size adapted to the diameter of the tube to be coiled.

1n the upwardly extending rear portion 25 of the tool 14 is mounted a threaded screw 32 having on its outer end a handle 33 and at its inner end a fork 34 carrying a roller 35, which may be set forwardly, when desired, to lie, at a peripheral edge, in the path of the tube drawn through the groove 26, as shown in Figs. 5 and 6, so that it may during the coiling of the tube form a concave groove 36 therein, the groove 36 being desirable when the coil is to be employed in some forms of evaporators. When it is not desired to form the groove 36 in the tube as coiled, the wheel 35 will be held in a rear position beyond the groove 26 by means of the adjusting screw 32,, said wheel at such time performing no function.

In the employmentof the invention, the mandrel 12 will be. secured between the head andtail stocks l0 and the tool 14 mounted upon the carriage 11, which will initially be adjacent to the right hand end of the mandrel- The straight tube to be coiled will be inserted endwlse below the right hand end of the mandrel and set within the end portion of the groove 15 thereof, the end or said tube being then carried upwardly along the rearside of the mandrel and then forwardly to the po' sition shown by dotted lines in Fig. 2, whereupon the end portion 22 of said tube will be bent along the side of the block 19, as shown by solid lines inv Fig. 2. The tool 1.4 will then be drawn forwardly on the carriage toward and against the mandrel and the tube then on the end of the same, and rigidly secured by bolts l3 against endwise movement, the grooves 24, 2(3 of said tool litting upon the tube and the rib 27 on said tool entering the groove 15 of the mandrel immediately in advance of that portion of the tube housed by said groove 20. The mandrel, tube and tool being thus poforwardly pro sitioned, power will be applied through the head-stock to rotate the mandrel upwardly and toward the front, with the result that the tube will be gradually drawn into the groove 15 of and coiled upon the mandrel and.

the tool 14 and carriage it will gradually travel toward the left hand end of the mandrel, the engagement of the rib 27 on the tool with the walls of the groove of the rotating mandrel compelling the tool to travel along the mandrel at just the same rate of speed as the tube is drawn through the groove 26 and coiled upon the mandrel. During the coiling of the tube, the latter is drawn through the passage formed by the matched grooves 15, 2G and is closely confined therein, whereby said tube is prevented from llattening or becoming otherwise distorted. The rib27 on the tool not only enables the rotating mandrel to compel the travel of the tool but said rib assures the due relation of the groove 26 with the groove of the mandrel, whereby a uniform coil is produced and the coiling operation rendered entiiely successful. When it; is desired to groove the coil as formed, as shown in Fi 5,.the roller 35 will be adjusted forwardly so that the tube on its passage through the groove 26 will be forced to move against it. After the tube has once been applied upon the end of the mandrel and the tool 14 adjusted forwardly against the same and the mandrel, the coiling operation proceeds automatically and with proper rapidity.

By means of my invention 1 am enabled to form the coils without; first solidly filling the tubes which is a matter of considerable importance.

The bending of the end portions of the tubes is an operation carried on independently of the tool 14, and in order to avoid the flattening of the tube during such operation I till said portions solidly with rosin or other suitable material which may be removed (as by melting the rosin) after the ceiling operation has been concluded.

What 1 claim as my invention and Letters-Patent, is:

l. A pipe coiling mechanism comprising a spirally grooved mandrel. means for rotating the same, a coiling tool adapted to'said mandrel, and a traveling c huge for said tool, said/tool having a face on the are of a c (:10 encompassing :1 portion of said mandrel and possessing a groove matching and extending along :1 section of the e'roove'in the mandrel and a part entering and engaging the wall of another section thereof; substantially as set forth.

desire to secure by spirally grooved nmmlrel. means for rotating the some, a coiling tool adapted to said mandrel and having means to groove the pipe as coiled, and a traveling carriage for said tool, said tool having :I face on the :ire oll circle encompassing a portion of said mandrel and possessing a groove matching and extending along section of the groove in the mandrel and a part entering and engaglng tho wall of another section lhereot': substantially as set forth.

It. pipe-t-oiliin :ind grooving mechanism comprlslne; at spirally grooved mandrel, means for rotating the same, a coiling tool adapted to said mandrel and having a deviet t'o groove the pipe coiled, :tdjnsling menus for said device, and a traveling for said tool, said tool having :I face on the arc ol .1 t rcle encompassing :1 portion of said mandrel and poss sing :1 groove matching and extending alonga section of the groove in the mandrel and a part entering and engaging the wall o1- another section thereof; substantially s set forth.

4. pipeeoi|in;: mechanism comprising a spirally grooved mandrel, means for rotating the same, :i coiling: tool. and a carriage for said tool, said tool comprising :1

tting table portion and'iin upwardly ex- :1. A pipe-coiling and ;.:roovin;.; mechanism comprising :r

tending rear portion adapted to said mandrel and formed with communicating grooves in said portions to receive the pipe'and with a rib to enter and engage the wall of the groove-in the mandrel substantially as set forth.

5. A pipe coiling mechanism comprising a spirally grooved mandrel having a spiral rib defining the groove, means for rotating; the some, a coiling tool, and a carriage for said tool, said tool comprising; a forwardly projecting table portion and an upwardly extending rear portion adapted to said mandrel and formed Willi communicating grooves in said portions to receive the pipe, a rib to enter and engage the wall of the groove in the mandrel and pa 'allel shoulders on the arc of a circle to engage the rib on the mandrel; substantially as set forth.

6. A pipe-coiling and grooving mechanism comprising a spirally grooved IDXUldI'BL'lBGflIlS for rotating; the same, a coiling tool, a roller carried by said [001 for grooving the pipe as coiled, and a carriage for said tool, said tool conl prising a forwardly projecting table portion and an up \vardly extending rear portion adapted to said mandrel and formed with communicating grooves in said portions to re ceive the pipe and with a rib to cute "nd engage the wall of the groove in the mandrel; substantially as set forth.

7. A pipecoiling mechanism comprising a spirally grooved mandrel, means for securing the end of a length of pipe thereto, means for rotating the mandrel, a coiling tool adapted to said mandrel, and a traveling call. no for said tool, said tool having a face on the are 01' a circle encolnpasslng a portion of said mandrel and possessing a.

of another section of the groove thereof; substantially as set lortlr 8, A pipe-coiling and grooving mechanism clomprising a spirally grooved mandrel, means for securing the end of a length oi pipe thereto, means for rotating the mandrel, a ceiling tool adapted to said mandrel and having a roller to groove the pipe coiled, and a traveling carriage for said tool. said tool having a face on the arc of a circle encompassing a portion of said mandrel and possessing a groove matching and extending along a section of the groove in said mandrel and an elongated rib encircling a portion of said mandrel and entering and engaging the Wall of an other section of the groove thereof; substantially as set forth.

U. A pipe-coiling and grooving mechanism comprising a spirally grooved u'landrel. means for securing the end 01 a length of pipe thereto, means for rotating the mandrel, a coiling lool adapted to said mandrel and having a roller to groove the pipe as rolled, means for adjusting said roller as to its position, and a iravcliu; arrlnge for said tool, said tool havin a face on the arc of a circle encompassing a portion of said mandrel and possessing a groove match ing and extending along a section oi? the groove in said mandrel and an elongated rib encircling a portion of said mandrel and entering and engaging the wall oif another seclion oi the groove (hereof; substantially as set forth.

Signed at New York city, in the county of New York and Stale of New York this 18th day oi July A. l) 1900.

nunnnN a. now.

\\'llnesscs:

CHAS (1. (line, Alrrllltl: Mannm. 

